retrieve and create self.unum and self.shortname

For use with making more useful plot titles, gets the object unum
and shortname and saves them as variables (previously only stored
the name that was given to search on, which when it's the unum is
not that helpful)
added plot_title variable to allow more informative plot titles
added plot_title variable to allow more informative plot titles
removed some plotting functions; moving to plotting module
calculate quantiles and mean and upper/lower limits
different format for returning median and uncertainties
Plot results from multiple runs on the same object

given the results from multiple runs (i.e. full spectrum, JHK bands)
plot a corner plot with errorbar plots of each parameter vs the
others, and then comparing the results to predictions vs. spectral
types